﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Example38
{
    class Program
    {
        static void Main(string[] args)
        {
            Crectangle recta = new Crectangle(3,4);
            Crectangle rectb = new Crectangle(5,6);
            Console.WriteLine("rect a: (0)" + recta.area());
            Console.WriteLine("rect b: (0)" + rectb.area());
            Console.ReadLine();
        }
    }
}
